1 /* 2 * Licensed to the Apache Software Foundation (ASF) under one 3 * or more contributor license agreements. See the NOTICE file 4 * distributed with this work for additional information 5 * regarding copyright ownership. The ASF licenses this file 6 * to you under the Apache License, Version 2.0 (the 7 * "License"); you may not use this file except in compliance 8 * with the License. You may obtain a copy of the License at 9 * 10 * http://www.apache.org/licenses/LICENSE-2.0 11 * 12 * Unless required by applicable law or agreed to in writing, 13 * software distributed under the License is distributed on an 14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 15 * KIND, either express or implied. See the License for the 16 * specific language governing permissions and limitations 17 * under the License. 18 */ 19 package org.apache.myfaces.orchestra.viewController; 20 21 import org.apache.myfaces.orchestra.frameworkAdapter.FrameworkAdapter; 22 23 /** 24 * Provides facility to look up the ViewControllerManager instance that is used by 25 * Orchestra to invoke lifecycle methods on "controller beans" associated with the 26 * current view. 27 * 28 * @since 1.3 29 */ 30 public class ViewControllerManagerFactory 31 { 32 private final static ViewControllerManager DEFAULT_VCM = new DefaultViewControllerManager(); 33 34 /** 35 * Returns the singleton ViewControllerManager object. 36 * <p> 37 * If a bean with name "org.apache.myfaces.orchestra.viewController.ViewControllerManager" exists 38 * then this is returned. This bean is expected to be a singleton. 39 * <p> 40 * Otherwise a singleton instance of {@link DefaultViewControllerManager} will be returned. 41 */ 42 public static ViewControllerManager getInstance() 43 { 44 ViewControllerManager manager = (ViewControllerManager) 45 FrameworkAdapter.getCurrentInstance().getBean(ViewControllerManager.VIEW_CONTROLLER_MANAGER_NAME); 46 if (manager != null) 47 { 48 return manager; 49 } 50 51 return DEFAULT_VCM; 52 } 53 }